Heater



Patented Aug. 16, 1927.

Louis r. wanner, or` wiaTEnBimY', ooNNncTiI'ouT.

j, nanna. f

iipisiieaum.meaV August 11, leze. semanal, 128,637.

The primary einem 0f this investita is, the provision of a device for utilizing the'V exhaust from an engine for heating; The

principle purpose however, i's` to'utilize the exhaust from an internalcom'bus'tion engine:

for heat-ing automobiles, busses and motor vehicles generally propelled by a" motive'r plant including' an internal combustion eng'ine.

Ther invention furthermore contemplates the ventilation of the vehicle by sup lying fresh warm air thereto at aA pressure s i'ghtly in excess of atmosphere pressure and-to so' construct 'the heater that there is no likelihood of the warm lair being' contaminated by ther admi'xture therewith' of any exhaust j gases'that may escape at the joints.

The invention also supplies aV device which is efficient for' heating and ventilatin", conpact in structure,` adapted to be rea ily as- `seniblech or taken apart, and which may be Conveniently attached to the vehicle in any advantageous' position.

lVhile the vdrawings illustrate a preferred embodiment of the invention, it is` to be understood that 'in' adapting the means to meet specific needs and requirements, the design may be varied and such other changes in the minor details of construction may be resorted to within the scopev of the invention as claimed, without departing from' the spirit thereof. l 1

vFor a full understanding' of the invention and the merits thereof, reference is to be had'to the followingdescription and the drawingshereto attached, vin which,- l FigureA l is a horizontal sectionalE View of aA heater embodying the invention, and

Figure2 is a detail sectional viewon the line 2 2 of Figure 1,. looking to the `left as designated by the arrows. H

Corresponding and like parts are referred to in the following description and designated in both views of the drawings by like reference characters.

The heater comprises a. rectangular casing through which the air to be heated is circulated and caused to travel in a tortuous path, said casing having an' inlet 1 and an outlet 2, preferably disposed at diagonally opposite points. The casing is preferably iormed of plates which are connected in any determinate way to admitof the parts being readily assembled or taken apart as required. Tierods 3 connect opposite plates of the casing in which are preferably formed the niet ad the' @niet Openings to* which are fitted collars for attachment of the pipes not shown, whereby the air to be heated is supplied to the casing and the warm air dis'- charged from the casing is "deliveredl to the j interior of the vvehicle or other place to be heated- The' plates4 forming opposite side 'walls of the casing' are clam ed between the plates' 5 which are connected y means of the tie rods 3 and are connectedto plates 6 by meansv of angle irons 7 which mayy be' attached to the respective plates in any deteri'ninateway. The walls 4 and 5 are suitably lined with asbestos or other refractory'material",z as indicated at 8, to prevent material y loss'- of heat. The casing may belof any capacity and may be attached tol the vehicle preferablyexteriorly tlie'reof'in any determinate way, and for convenience, the plates (i. areA extended to provide for receiving the tastenings or other attaching means. A` plu-l rality of pipes 9 extend across the space 10 of the casing and project through openings formed in the plates 6 and obtain a close tit withv said plates to practically prevent the passage'ofair.I Plates 1l are spaced from the respectiveplate 6,' and are' connected thereto. Openings are formed in the plates 1l opposite tlie've'nds of the pipes 9 and flanged collars 12 are fitted in said openings and receive the ends of the ipes 9,as shown most clearly. in Figure 2. j ne of the plates lll is .rigidly connected to the adjacent plates G whereasv the companion plate 11 is yieldably'co'nnected to the adjacent plate 6 at the oppos'iteside of the casing.Y In this inanner provision is had' for contraction. and expansion of the pipes 9 incident to the cool- 'ing and the heatingi ofthe device.' The rigid cohnectionsare indicated at 1'3 and thel yieldable connections at 14'. These connections consist' of bolts passing through openingslformed in the plates 6 and 11 and spacing sleeves mounted upon the bolts and arranged between the plates to hold them apart the required distance.y Open coil springs 15 are mounted from the bolts constituting theyieldable connections 14. The

number of the pipes 9 between the walls 5 will depend upon the capacity of the heater and this .is true of the number of pipes provided between the walls 4. Similar boxes 16 are located at diagonally opposite points of the casing and are bolted'or otherwise secured to the respective plates 11 and each has an opening and a collar in line with the Uli loo

opening. One of these collars, as 17, corresponds to the inlet for ythe exhaust, and

the other collar corresponds to the 'outlet site end of the second pipe, or pipes, con-v nects with the box 19 the same side of the casing as the box 16 having the inlet 17, and this box is in turn, connected with one end of the third pipe, lor pipes 9. In this manner the exhaust passes through the pipes 9 and boxes 19 in successive order and finally discharges through the outlet 18 from which it may be conveyed Vto the required point of discharge into the atmosphere. The exhaust, in its travel through the pipes 9 heats the space 10 and warms the air circulating through said space.` Baflies and 21 in the length of the space 10 and projecting from opposite plates 6 compel tne air in its passage through the casing to travel .in a tortuous path. These baffles may be secured in place in any preferred way. Covers 22 enclose the boxes 16 and 19 at opposite sides of the casing and may be of any construction and attached to the respective plates 11 in any determinate way. These covers are hollow and protect the boxes and the spaces are filled with asbestos 22n or other refractory material to prevent loss of heat. The collars of the boxes 16 corresponding to the inlet 17 and the outlet 18 project through the openings formed in the respective covers 22, thereby admitting of coupling of the pipes thereto, whereby the exhaust from the engine is supplied to the heater and conveyed therefron'i after circulating through the series of pipes 9 and the boxes connected therewith.

In accordance with the invention the air to be heated is filtered, if need be, and is supplied to the casing under pressure. The warm air from the casing is discharged through the outlet 2 and may be conveyed to the interior of the vehicle in any preferred way by means of a pipe, not shown, fitted to the outlet 2. The pure4 warm air being supplied'to the vehicle under pressure in excess of the atmospheric pressure causes a discharge of the air from said vehicle thereby insuringventilation as well as heating. The

air pressure within the casing being greater through Afor subsequent use in heating and Ventilating in the manner stated.

Having thus described the invention, I claim: 7 Y l 1. A heater comprising a casing having an inlet and an outlet, plates atopposite sides of the casing and spaced therefrom, one of the plates-being rigidly connected to the casing and the other plate being yieldably connected to the casing, a pluralityof pipes extending through the casing and the walls thereof to which the said plates are connected and coupled to the latter, and boxes carried by said plates and connecting the ends of the pipes to provide a passage for the circulation of exhaust through the said pipes vfor'heating the air passing through the casing.

2. A heater comprising a casing having an air inlet and an air outlet, plates at opposite sides of the casing and spaced therefrom, means rigidly connecting one of the plates to the casing, means yieldably connecting the other plate to the casing, pipes extending through the casing andthe walls thereof to which the said plates are connected and having their projecting ends coupled to the said plates, boxes mounted uponY the plates and connecting the ends of the pipes and covers carried by the plates and enclosing the boxes mounted thereon.

In testimony whereof I affix my signature.

Louis P. wanner. [1.. s] 

